Qui-Gon's Spirit doesn't count towards controlling the Character arena.
Prevent all damage to and from Qui-Gon's Spirit.
Whenever one of your Jedi Characters or Jedi Pilots is discarded from any arena, you may put the top card of that Character or Pilot facedown under Qui-Gon's Spirit. (Cards put under Qui-Gon's Spirit in this way are not a part of his stack and are not in play.)
When Qui-Gon's Spirit is discarded, put all facedown cards under him into your discard pile.
When your build step starts, gain 1 Force for each face down card under Qui-Gon's Spirit.
Text erratum for third ability
You may have Qui-Gon's Spirit in the arena at the same time as Qui-Gon Jinn. They do not stack.
Qui-Gon's Spirit still counts as a unit and may be targeted by effects that target units.